Micromax Q427+ - Keys are not working; Keypad Troubleshooting

Q427+ L3 Service Manual
 Flash the handset with latest SW
 Check if the keys FPC normally or not, Re-Solder Side key or change it
 Check the circuit from keys to CPU normally or not ,then Re-Solder CPU or change it
20.Reset is not working: N/A
Side key
CPU
Key FPC